// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_DOWNLOAD_SAVE_FILE_H_
#define CONTENT_BROWSER_DOWNLOAD_SAVE_FILE_H_

#include <stddef.h>
#include <stdint.h>

#include <memory>
#include <string>

#include "base/files/file_path.h"
#include "base/macros.h"
#include "content/browser/download/base_file.h"
#include "content/browser/download/save_types.h"

namespace content {
// SaveFile ----------------------------------------------------------------

// These objects live exclusively on the file thread and handle the writing
// operations for one save item. These objects live only for the duration that
// the saving job is 'in progress': once the saving job has been completed or
// canceled, the SaveFile is destroyed. One SaveFile object represents one item
// in a save session.
class SaveFile {
public:
    explicit SaveFile(const SaveFileCreateInfo* info, bool calculate_hash);
    virtual ~SaveFile();

    // BaseFile delegated functions.
    DownloadInterruptReason Initialize();
    DownloadInterruptReason AppendDataToFile(const char* data, size_t data_len);
    DownloadInterruptReason Rename(const base::FilePath& full_path);
    void Detach();
    void Cancel();
    void Finish();
    void AnnotateWithSourceInformation();
    base::FilePath FullPath() const;
    bool InProgress() const;
    int64_t BytesSoFar() const;
    std::string DebugString() const;

    // Accessors.
    SaveItemId save_item_id() const { return info_->save_item_id; }
    int render_process_id() const { return info_->render_process_id; }
    int request_id() const { return info_->request_id; }
    SaveFileCreateInfo::SaveFileSource save_source() const
    {
        return info_->save_source;
    }

private:
    BaseFile file_;
    std::unique_ptr<const SaveFileCreateInfo> info_;

    DISALLOW_COPY_AND_ASSIGN(SaveFile);
};

} // namespace content

#endif // CONTENT_BROWSER_DOWNLOAD_SAVE_FILE_H_
